Select Challenge mode, and play a Vs. match. Press Start when the match begins, and select the "Give Up" option. Repeat this three times to intentionally lose the match and increase the loyalty with that character.

Advanced shot

Instead of using the head of the club to line up your shot, it is much easier to use the shaft. Line up your player's club with the "ghost" club to ensure a more fail-safe shot.

In-game reset

While playing the game, press L1 + L2 + R1 + R2 + Select + Start to reset the game and take you back to the main menu.